could bobsled
Verbo regular: bobsled - bobsleded- bobsleded

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I could bobsled
you could bobsled
he could bobsled
we could bobsled
you could bobsled
they could bobsled 	I could be bobsleding
you could be bobsleding
he could be bobsleding
we could be bobsleding
you could be bobsleding
they could be bobsleding	I could have bobsleded
you could have bobsleded
he could have bobsleded
we could have bobsleded
you could have bobsleded
they could have bobsleded	I could have been bobsleding
you could have been bobsleding
he could have been bobsleding
we could have been bobsleding
you could have been bobsleding
they could have been bobsleding	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I could not bobsled
you could not bobsled
he could not bobsled
we could not bobsled
you could not bobsled
they could not bobsled 	I could not be bobsleding
you could not be bobsleding
he could not be bobsleding
we could not be bobsleding
you could not be bobsleding
they could not be bobsleding	I could not have bobsleded
you could not have bobsleded
he could not have bobsleded
we could not have bobsleded
you could not have bobsleded
they could not have bobsleded	I could not have been bobsleding
you could not have been bobsleding
he could not have been bobsleding
we could not have been bobsleding
you could not have been bobsleding
they could not have been bobsleding	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
could I bobsled?
could you bobsled?
could he bobsled?
could we bobsled?
could you bobsled?
could they bobsled? 	could I be bobsleding?
could you be bobsleding?
could he be bobsleding?
could we be bobsleding?
could you be bobsleding?
could they be bobsleding? 	could I have bobsleded?
could you have bobsleded?
could he have bobsleded?
could we have bobsleded?
could you have bobsleded?
could they have bobsleded? 	could I have been bobsleding?
could you have been bobsleding?
could he have been bobsleding?
could we have been bobsleding?
could you have been bobsleding?
could they have been bobsleding? 	

Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
could I not bobsled?
could you not bobsled?
could he not bobsled?
could we not bobsled?
could you not bobsled?
could they not bobsled? 	could I not be bobsleding?
could you not be bobsleding?
could he not be bobsleding?
could we not be bobsleding?
could you not be bobsleding?
could they not be bobsleding? 	could I not have bobsleded?
could you not have bobsleded?
could he not have bobsleded?
could we not have bobsleded?
could you not have bobsleded?
could they not have bobsleded? 	could I not have been bobsleding?
could you not have been bobsleding?
could he not have been bobsleding?
could we not have been bobsleding?
could you not have been bobsleding?
could they not have been bobsleding?